Gas-stove.



Patented Aug. 28, |900.

H. P. SIMPSON.

GAS STOVE..

(Application filed May 16, 1889. Renewed Apr. 28, 190D.)

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SPECIFICATION forming paris of Letters Patent No. 656,794, dated August28, 1900. Application filed May 16, 1899. Renewed April 28. 1900. SerialNo.14,760. (No model.)

To @ZZ whom Vt may concern:

Be it known that l, HARRY PREscoT'r SIMP- SON, a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inGas-Stoves, of which the following is a specification, reference beinghad therein to the accompanying drawings.

The object of this invention is to provide an improvement in gas-stoves;and to this end the invention consists in means whereby heat which hasheretofore been wasted may be utilized in a stove having a great amountof heat-radiating surface and constructed in such a manner as to producea general irnprovement in the heating qualities of a stove without anyincrease in the amount of fuel consumed; and the invention furtherconsists in certain combinations of parts and features of construction,all as hereinafter set forth.

In the accompanying drawings, which illus trate an application of theinvention, Figure 1 is a perspective view of a stove embodying theimprovement; Fig. 2,'a central vertical sectional view taken on line IIII of Fig. 4; Fig. 3, a vertical sectional view taken on line III III ofFig. 4; and Fig. 4, a horizontal sectional view on line IV 1V of Fig. 2,looking down on the hollow heating-base, with the burner omitted.

Referring to the drawings, the body of the stove, comprising the sides,back, and top portions, is of the same` general shape and constructionas gas-stoves of the class to which this invention relates. The bodyportion rests on and is supported by a hollow heating-base l. Thishollow base may be of any desired shape and the details of constructionmay be varied. As illustrated, it comprises the bottom and four sides,all made from, a single sheet of meta-l and joined at the corners, andthe top or cap plate 2, which is provided with an extending portion 3,the object of which will be hereinafter mentioned. Instead of formingthe hollow base of i a single piece of sheet metal it may be made ofcast metal, the shape of the same enabling it to be readily cast. Thetop plate 2 covers only a portion of the hollow base and is madeseparate from the base proper. Up` wardly-extendin g flanges 4, runningfrom the edges of the extended part 3 outwardly to the corners of thetop plate 2, engage with the llame-plate when the latter is in place.Within the hollow base are two similar L-shaped walls 5. made of sheetmetall are securely attached to the bottom plate ol' the base. A burner6, disposed between the sides of the body portion, is connected with thesource of fuelsupply by a pipe-coupling 7. Immediately back of theburner 6 is an inclined Hameplate 8. This flame-plate is attached to thesides of thebody portion and rests on the top 2, its lower edge engagingwith the flanges 4 of the top plate 2. The flame-plate is usuallycovered with asbestos, but other refractory material may be employed. Apartition-plate 9, located between the back 10 of the stovebody and adame-plate 8, aids in forming the tiues or passages 1l and 12. Plate 9runs entirely across the interior of the stove, extending upwardly fromthe part 3 and the upper edges of the walls 5 to the top 13 of the bodyportion and, as shown, is riveted to the sides of the stove. The heatedair and products of combustion pass in the direction indicated by thearrows and after leaving the llameplate strike against the top 13, bywhich they are deflected. The course of travel is then down through theiiue or passage 1l and into the hollow heating-base through the passages14 and 15, which latter are formed by the L- shaped walls 5, 'the' sidesof the hollow base, and the top plate 2. The heated air is caused tocirculate thoroughly throughout the hollow base and then passes into theflue l2 through the duct 16, formed by the walls 5 and the ext-endedportion 3 of the top plate 2. The stove is further provided with theusual exitpipe 17.

By the construction herein set forth a great amount of heat-radiatingsurfacepis provided and the heating power of the stove is verymaterially increased without any additional consumption of fuel.Practically all the heating products are brought in contact with theplates, walls, and heating-base of the stove before passing out theexit-pipe, thereby greatly adding to the heating efficiency of thestove.

Having thus described my invention, whatr I claim is- These walls, whichare preferably v IOO 1. In a gas-stove, the combination, with the bodyportion, of va burner, a Haine-plate, a

hollow heating-base on which the body portion rests, a downtake flue orpassage in the body portion formed by the flame-plate and apartition-plate located between the flameplate and the back of the bodyportion, said flue or passage in communication with ducts 0r passagesformed in the hollow heating-base, a passage in the hollow base incommunication with an uptake flue or passage, said uptake-passage formedby the partition-plate and theback of the stove-body, and anexitpassage, substantially as set forth.

2. In a gas-stove, the combination, with the body portion, of a burner,a flame-plate, a partition-plate between the back of the body portionand the flame-plate, a downtake iiue or passage formed by theflame-plate and the partition-plate, Aa hollow heating-base, a top platefor the hollow heating-base having an extended-part 3, walls 5, withinthe base and forming, in conjunction with the top plate andsides of thebase, passages 14 and 15, an uptakeiiue or passage 12, and a centralpassage 16,'in communication with passage 12, and with passages 14 and15, substantially as set forth.

3'.` In a gas-stove, the combination with the body portion, of a burner,a Haine-plate, a vhollow heating-base having a top plate partiallycovering the hollow base, said base struck up or cast from a singlepiece of metal and provided with means for causing a circulation of theheated air and products of combustion throughout the base, a downtakeiiue or passage formed by the flame-plate and a partitionplate locatedbetween the flameplate and the back of the body portion, an uptake flueor passage formed by the back of the body portion and thepartition-plate, said downtake flue or passage in communication withpassages in the hollow base and a passage leading from the hollow baseto'the up- -take line or passage, substantially as set forth.

4. In a gas-stove, the combination with the body portion, of a burner, a`dame-plate, a hollow heating-base, a partition-plate between theiiame-platefand the back of the body portion, a downtake flue or passagein communication with the hollow base and formed by the iiame-plate andthe partition-plate, and an uptake iiue or passage in communication withthe base and formed by the partitionplate and the back of the bodyportion, substantially asset forth.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY PRESOOTT SIMPSON.

Vitnesses:

EDWARD B. VAILL, W. G. DooLITTLE.

